Interesting ... the earthquakes in Oklahoma have gone from the average of 50 a year to 1047 last year. There is a buried mountain range named the Nemaha Ridge (sp) running north east. Someone in Oklahoma will likely write a paper on it soon. It is cause unknown as of now, other than the basics mentioned in the linked article We know God works in mysterious ways, his wonders to perform.
THank you so much for your reply and link!
Blessings
texokie